<!DOCTYPE html>

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title></title>
    <script src="./js/vue.js"></script>
</head>

<body>
    <div id="app">
    这个游戏机的价格是：{{price}},含税价格：{{price1}},折合人民币价格{{price2}} 
    <button @click="btnclick(10800)">含税价格10800</button>
    </div>

    <script>
        var vm = new Vue({  
            el: '#app',
            data: {
                price:21999
            },
            methods: {
                btnclick(newprice){
                    this.price1=newprice
                }
            },
            computed:{
                price1:{
                    // return Math.round(this.price*1.08)
                    get:function(){
                        return this.price*1.08
                    },
                    set:function(value){
                        this.price=value/1.08;
                    },
                },
                price2:function(){
                    return Math.round(this.price1/16.75)
                }
            }
            
        })
    </script>
</body>

</html>